Process of producing metal glutins and product thereof



Patented Oct. 2, 1928'.

UNITED STATES m1. Kl'l'TIEL, E VIENNA, AusrE-IA, AssIeuoa; BY manor Am). mEsNEassIoN- MENTS, 0E ONE-FOURTH '10 E Nsr J.-WATZL,'OF CLEVELAND,-OHIO, AND ONE- E UETH T0 HERMAN J. TRENKAMLP, or cLEv LANn HEIGHTS, OHIO.

'raocEss 0E rnonucmc METAL enu'rms AND mzonuc'r' THE OF,

No Drawing.

. I This invention relates to an improved process of producing metal glutins and product thereof It has been known that the mechanical 6 properties of glutin may be improved by adding salts and hydroxids of bivalent or trivalent metals.

The metal-hydroxids, in a pulverized con'- dition, are-mixed with the glutin or gluti- V 10 nous material and subsequently are com- I have discovered that under certain conditions all the glutin canbe separated as pure metal glutin, and only this material possesses the mechanical properties required-of .a material to be employed for manufacturing purposes. A pure metal glutin will advantageously serve as a casein substitute and is also adapted for the manufacture of many of the marketed articles now composed of bakelite. .The particular merit of pure metal glutin is that it can be more quickly and more economically produced and fabricated.

In order to separate all the glutin to obtain a pure metal-glutin it is necessary 1. To alkalize at first the g'lutin-solution and thereafter separate by the aid of metalsalt.

2. To add to the glutin only such a quantity of alkali, that the entire glutin is transformed into saturated alkali-metal-glutm. This alkalinity is positively determined by the'chemical character of the glutin and can be determined in various ways,such as potentiometrically or viscosimetrically.

3. To obtain the best alkalinity which is only to be realized if one observes and retains its exact proportion whereby the total glutin is precipitated, without any remaining in the solution.

4. To add an excess of the separating metallic salt solution and not a stoichiometrical proportion of the same, thus differing from Application filed August 7, 1925. Serial No. 48,915.

the neutral. reaction as ca formation of metal-hydroxids The separated metal glutinilswfreed water. For instance, in .case -A l' (SO,) 3 is employed for forming aluminium glutin, the aluminium or the saltsolut-ion of thatmetal contained in the resulting glutin metal combination will amount to 5.9%., whilethe sulphate embodied in the 10.25%; y

From the above it is seen, that the metalglutin also contains the anion of the separating salt. 4 Therefore such metal-glutins from the salts 1n excess by :washi-nga'theh-same in same amount to can also be produced, wherein the glutin embodies inorganic or organic anions, which otherwise form with the metal-ions water-1nsoluble or difli-cultly soluble salts (for'instance phosphates, silicates or various orgame acid salts.)

following manner Theseocombinations can be produced in the i 1. The metal-glutin' obtained washed out in thedcscribed manner is treated with the aqueous solution of the alkali-metal-salts of the corresponding anions, whereby the anions are exchanged.

2. During the production of the metalglutins, the alkali-metal-salts of the corre sponding' anions are added to the reactionmixture in the following manner salt, or

(6) First a part of the metal-salt solution, thereafter the "alkali-metal-salt of the corresponding anions, and finally the rest of the metal-salt.

Simultaneously with the separating Example. I

1. A glutin-solutionmay be derived from animal wastes which contain a glue-rendersolution, of course, is a glutin-solution, By

concentrating this solution by evaporation, one obtains the gelatinous form, which by dissolving again in water render a glutin-solution. A 20% glutin-solution is alkalized in such a manner, that for each litre of the solution are added370 ccm. of a 5.41% solution v of causti alkali is well distributed and combined with kalizing lutin-byradding only such a quan-c the lutin, and then 630cc. of an aluminium- .sulp'ate; solution, containing. "about 152 grammes of aluminium-sulphate per litre, are added to each litre of the glutin-solution.

'I he reaction mixture gradually becomes thicker until it is of a past consistency. The drying takes place gra ually. fter some hours the mass can' be compressed and repeatedly washed with water, whereby the excess salt is removed. During the reaction the temperature is to be maintained at about 28 centigrade. j 2. If it is desired to produce the zinc combinations of the glutin, ,instead of the aluminium-salts, the procedure is the same as above mentioned, but in place of the aluminium-sulphate solution I employ 630 com. of a zinc-sulphate solution, containing-215 rammes of sulphate of zinc per litre, for. each litre of'the'glutin-solution.

I claim 1. A process of I as a chemical combination, consisting in altity of a1 ali asis required to transform all the glutin into saturated alkali metal glutin and. subsequently adding an insoluble glutinate-forming type of metallic salt. e

.2. A process of producing metal glutins as a chemical combination, consistin in alkalizing glutin and subsequentl a ding a; metallic and insoluble glutinat'eoiming' salt in excess of the uantlty necessary for men tralizing the alka i employed.

3. A process of producing metal glutins as a chemicalcombination,consisting in al- .w kalizing a lutin solution by adding thereto a normal a1 ali metal hydroxide solution and subsequently adding an insoluble glutinat ployed.

ing an insoluble lg kali-metal-salts w lch salts in conjunction 'and insoluble sary for precipitating, portion of alkali-metal-salts which salts in roducing metal glutins necessary for neutralizing the 'alkali em- 4. A consisting in alkalizin adding a metallic an process of producing metal-glutins, glutin, subsequently insoluble glutinateforming salt, and finally adding alkali-metalsalts which salts in conjunction with. metals of the aluminium-irongioup results in diflicultly soluble combinations.

5. A process of'producing metal-glutins, consisting in alkalizing glutin, subse uentl adding metallic salt and simultaneous y ad lutinate-forming the y alwith metals of the aluminiumdron group result in diflicultly soluble'combinations.

' 6. A process ofproducing' metal-glutins, cohsisting in alkalizing glutin, subsequently adding a portion of the quantity of a metallic lutinate-forming salt necesconjunction with metals of the aluminiumiron groupresult in difiicultly soluble combiadding the remaining nations, and finally adding the remaining portion of the said metallic salt.

7. As a new article of manufacture, an integral tenacious mass consisting solely of pure metal glutin, adapted while warm to be ductile and hence permit of fabrication to any desired shape and to become set and retain its shape w en'cool.

8. A process of producing metal-glutins as a chemical combination, consistin in alkalizin glutin, and subsequently ad ing .an in sol uble glutinate-forming metallic salt while the temperature is maintained atabout 28 centigrade. A v In testimony whereof I aflix my signature.

-- KARLKUTTEL. 

